SILVA, L. L. H.; http://lattes.cnpq.br/7047290871517404; SILVA, Lázaro Lavoisier Honorato da.
Resumo:
The faveleira (Cnidoscolus quercifolius Pohl) can be used in various
activities, from the recovery of degraded areas to the production of biodiesel. A major
difficulty is obtaining the seeds for seedling production. Because of this, cloning of
plants has the same purpose and is of critical importance in breaking such barriers.
The objective of this study was to evaluate the effect of indole acetic acid (IAA) and
Indole Butyric Acid (IBA) on the rooting of Cnidoscolus quercifolius Pohl and to know
the influence of different times of the year for collection of stakes. The stakes were
collected in three different months of the year 2010 (August, October and
November), from the main trunk of the trees, being cut down to about 15 cm long.
Concentrations of 0.0, 2.0, 4.0, 6.0, 8.0 and 10.0 g/l of IAA and IBA hormones were
applied through liquid. At 180 days of grafting cutting, we analyzed the percentage of
live stakes, main root length, dry root and dry shoot mass. The stakes had survival
rate of 33.3% and 22.2% when collected in the month of August for the AIA and AIB
respectively. A significant difference was observed in respect to the IBA main root
length and dry mass of roots. In general, the month of August is the best to collect
stakes and the different hormones concentrations (IBA and IAA) have no positive
effect on the rooting of Cnidoscolus quercifolius Pohl.